This study examines basic functional aspects of large digital libraries and draws on examples of existing digital libraries to illustrate their varying approaches to storage and content delivery, metadata approaches and harvesting, search and discovery, services and applications, and system sustainability.

In "Taking Stock: Sharing Responsibility for Print Preservation," Roger Schonfeld surveys the progress made in the past decade, and warns against the conflation of collaborative print management and improved access to collections with preservation. This issue brief was presented at Preserving America's Print Resources II: A North American Summit in Berkeley, California, on June 25, 2015. The full conference program is available at http://www.crl.edu/events/preserving-americas-print-resources-ii-north-american-summit.